5模糊系統(tǒng)仿真題

實(shí)驗(yàn)五模糊假言推理器實(shí)驗(yàn)一、實(shí)驗(yàn)?zāi)康模豪斫饽：壿嬐评淼脑砑疤攸c(diǎn)，熟練應(yīng)用模糊推理，了解可能性理論。通過實(shí)例比較模糊推理與不確定性推理的實(shí)質(zhì)區(qū)別。二、實(shí)驗(yàn)原理模糊推理所處理的事物自身是模糊的，概念本身沒有明確的外延，一個對象是否符合這個概念難以明確地確定模糊推理是對這種不確定性，即模糊性的表示與處理。模糊邏輯推理是基于模糊性知識（模糊規(guī)則）的一種近似推理，一般采用Zadeh提出的語言變量、語言值、模糊集和模糊關(guān)系合成的方法進(jìn)行推理。通過定義前項(xiàng)、后項(xiàng)和事實(shí)不同的模糊集合，模糊推理可以得到不同的計(jì)算結(jié)論。三、實(shí)驗(yàn)條件：Matlab6.5的FuzzyLogicTool。四、實(shí)驗(yàn)內(nèi)容：1.用fuzzy推論系統(tǒng)執(zhí)行XOR功能，XOR門的邏輯關(guān)系如表1所示。已知兩個輸入分別如圖2－1、2－2所示，要求：（1） 設(shè)計(jì)XOR門模糊推論系統(tǒng)結(jié)構(gòu)，給出其結(jié)構(gòu)圖，以及輸入語言變量的隸屬函數(shù)圖、模糊規(guī)則編輯圖、規(guī)則的推論瀏覽圖以及推論結(jié)果立體圖；（2） 用SIMULINK設(shè)計(jì)XOR門功能，給出SIMULINK設(shè)計(jì)圖；（3） 根據(jù)圖2－1、2－2所示的輸入，給出相應(yīng)的輸出結(jié)果圖。表1XOR門輸入/輸出關(guān)系圖Input1Input2Output0000111011100.80.60.80.60.40.2]:? 4 6 8 100.：0.60.40.20 2 4 6810圖2－2圖圖2－22．設(shè)計(jì)模糊控制位置跟蹤，已知控制對象為400s2+50s已知系統(tǒng)輸入即位置指令為正弦信號5sin（t），要求：（1） 設(shè)計(jì)模糊控制位置跟蹤系統(tǒng)結(jié)構(gòu)，給出其系統(tǒng)結(jié)構(gòu)圖；（2） 設(shè)計(jì)兩輸入一輸出的模糊控制器，給出輸入、輸出語言變量的隸屬函數(shù)圖，模糊控制規(guī)則表、規(guī)則的推論瀏覽圖以及推論結(jié)果立體圖。（3） 用SIMULINK設(shè)計(jì)模糊控制位置跟蹤系統(tǒng)，給出SIMULINK設(shè)計(jì)圖、位置指令圖、系統(tǒng)的輸出結(jié)果圖以及位置跟蹤的誤差圖。提示：模糊控制規(guī)則如圖3－1。If (e isNB)and (ecisNB)then (uisNB)(1)If (e isNB)and (ecisNM)then (uisNB)(1)If (e isNB)and (ecisNS)then (uisNM)(1)If (e isNB)and (ecisZ)then(uisNM)(1)If(eisNB)and(ecisPS)then(uisNS)(1)If(eisNB)and(ecisPM)then(uisNS)(1)If(eisNB)and(ecisPB)then(uisZ)(1)If(eisNM)and(ecisNB)then(uisNB)(1)If(eisNM)and(ecisNM)then(uisNM)(1)If(eisNM)and(ecisNS)then(uisNM)(1)If(eisNM)and(ecisZ)then(uisNS)(1)If(eisNM)and(ecisPS)then(uisNS)(1)If(eisNM)and(ecisPM)then(uisZ)(1)If(eisNM)and(ecisPB)then(uisPS)(1)If(eisNS)and(ecisNB)then(uisNM)(1)If(eisNS)and(ecisNM)then(uisNM)(1)If(eisNS)and(ecisNS)then(uisNS)(1)If(eisNS)and(ecisZ)then(uisNS)(1)If(eisNS)and(ecisPS)then(uisZ)(1)If(eisNS)and(ecisPM)then(uisPS)(1)If(eisNS)and(ecisPB)then(uisPS)(1)If(eisZ)and (ec is NB)then(u is NM)(1)If(eisZ)and (ec is NM)then(u is NS)(1)If(eisZ)and (ec is NS)then(u is NS)(1)If(eisZ)and (ec is Z)then(uisZ)(1)If(eisZ)and(ecisPS)then(uisPS)(1)If(eisZ)and(ecisPM)then(uisPS)(1)If(eisZ)and(ecisPB)then(uisPM)(1)If(eisPS)and(ecisNB)then(uisNS)(1)If(eisPS)and(ecisNM)then(uisNS)(1)31.If(eisPS)and(ecisNS)then(uisZ)(1)If(eisPS)and(ecisZ)then(uisPS)(1)If(eisPS)and(ecisPS)then(uisPS)(1)If(eisPS)and(ecisPM)then(uisPM)(1)If(eisPS)and(ecisPB)then(uisPM)(1)If(eisPM)and(ecisNB)then(uisNS)(1)If(eisPM)and(ecisNM)then(uisZ)(1)If(eisPM)and(ecisNS)then(uisPS)(1)If(eisPM)and(ecisZ)then(uisPS)(1)If(eisPM)and(ecisPS)then(uisPM)(1)41.If(eisPM)and(ecisPM)then(uisPM)(1)If(eisPM)and(ecisPB)then(uisPB)(1)If(eisPB)and(ecisNB)then(uisZ)(1)If(eisPB)and(ecisNM)then(uisPS)(1)TOC\o"1-5"\h\zIf (e is PB) and (ecisNS)then (uisPS) (1)If (e is PB) and (ecisZ)then(uisPM)(1)If (e is PB) and (ecisPS)then (uisPM)